Well-bcming- machine



' OFFICE.

JAMES E. KELLAR, OF SISTERSVILLE, WEST VIRGINIA.

WELL-BORING MAeHINE.

Application filed January 25, 1921.

T 0 all whom it may concern:

Be it known that I, JAMES E. KELLAR, a citizen of the United States,residing at Sistersville, in the county of Tyler, State of WestVirginia, have invented certain new and useful Improvements 'inWell-Boring Machines; and .I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it apper tains to make and use thesame.

This invention relates to new and useful improvements in boring machineand particularly to machines for boring wells.

One object of the invention is to provide a boring machine in which themotor for driving the bit is mounted'within the machine.

Another object is to provide adevice of this character in which areprovided novel and eiiicient, means for holding the barrel againstrotation while the bit is in motion.

Another object is to provide such a barrel holding means which willautomatically engage with the barrel and wall of the well upon beinglowered and which will automatically release when the barrel is pulledupwardly from the well.

Other objects and advantages will be apparent from the followingdescription when taken in connection with the accompanying drawings.

In the drawings:

Figure 1 is an elevation of the invention within a well, the well beingshown in section, as is also the well casing.

Fig. 2'is an enlarged vertical sectional view taken centrally throughthe boring device, and the casing in which it is positioned, with partsin elevation.

Fig. 3 is a horizontal sectional view on line 3-3 of Fig. 2, with thebarrel omitted.

Fig. 4 is a horizontal sectional view through thegripping members, onthe line 4+4 of Fig. 2.

Fig. 5 is a vertical transverse sectional View through one of the doorsof the bottom disk on the line 55 of Fig. 3.

Referring particularly to the accompanying drawings, 10 represents thewall of the well, and 11 the casing in the well, through which theinvention is lowered.

The invention includes a barrel 12, which has an upper chamber 13 and alower chamber 14, separated by means of the horizontal Specification ofLetters Patent.

Patented Oct. 11, 1921.

Serial No. 439,794.

disk wall 15, in the center of which is formed the opening 16, thepurpose of which will presently appear. A disk '17 is dis posed at theupper end of the barrel, while a boring bit disk 18 is disposed in thelower end of the barrel. Disposed vertically through the barrel is ashaft 19, the upper end being journaled in the rollerbearing box 20, inthe upper disk 17, and its lower portion being journaled in the rollerbearing box 21, in the'central disk 15. Within the chamber 13, andoperatively mounted on the shaft 19, is an electric motor 22 which isarranged to rotate the shaft and drive the bit 18. In the lower chamber14, on the shaft 19, is a spiral web 23, which serves to convey upwardlythe matter cut by the bit.

On the upper disk is secured a ring 24 to which is connected a wirelifting and lowering line 25. Mounted on the upper end of the barrel 12is an upwardly tapering nipple 26. Disposed above the barrel, andmovable toward and away therefrom, is a ring 27 carrying a plurality ofdepending spring fingers 28, each equipped with .a wedge 29 for wedgingengagement between the outer face of the nipple 26, and the wall of thewell,'to hold the barrel against rotation while the bit is in motion.The ring 27 is connected to the wire line by means of the ropes 25 saidropes being of such length that when the barrel is suspended by the wireline, the ropes will be taut and hold the ring in an elevated positionwith the wedges out of engagement with the nipple and well wall, butwhen the device has been lowered to a point below the lower end of thewell casing 11, and the wire permitted to become slack, the ring willfall and force the wedges into engagement with the nipple and well wall.Thus the wedges will be automatically engaged and disengaged when thedevice is lowered and lifted.

At the bearings 20 and 21 are formed stuffing boxes 30 and 31,respectively, to prevent entrance of foreign matter to the chamber whichcontains the motor.

The lower end of the shaft, 19, below the spiral web'23, is a centralthreaded nipple 23 which is screwed into the central boss 18' on theupper face of the disk 18. In this disk are formed the transverseelongated openings 32 in which are arranged the upwardly opening hingeddoors 33. The

free edge of each of the doors 33 is beveled from beneath as shown at34-, to rest on the correspondingly beveled wall 35 of the opening 32.

. The barrel, with its contained motor-and bit, are lowered through thecasing 11', until the bit is below the lower end of the casing, and themotor started to rotate the bit. The

material cut by the teeth 01 the disk '18.

will raise the doors 33 so that the said material may pass upwardlythrough the openings 32 in the disk 18, disposed above the bit, and intothe bottom chamber 13, where it is moved upwardly by the spiralweb 23.When the lower chamber becomes choked, the device is pulled up anddumped, and again lowered into the well, the weight of the cuttingsholding the doors 33 in closed position. The wires for supplying currentto the motor are shown at 33 as extending upwardly through the disks ofthe barrel. I

What is claimed is:

1. A well boring machine including a barrel having an upper chamber anda lower chamber, a vertical shaft rotatable within the center of thebarrel, a motor in the upper chamber for driving the shaft, a

bit on the lower end of the shaft below the lower end of the barrel, acutting conveying spiral web on the shaft in the lower chamber, alifting and lowering line for the barrel an upwardly tapering nipple onthe upper end of the barrel, and means for wedging action between thesaid nipple and thewall of a well, rotation. i

2. A well boring machine including a barrel, a motor in the barrel andhaving a shaft extending through the lower end of the barrel andprovided with a boring bit, a ring above the barrel and connected vwithto hold the barrel against the barrel by a lifting and lowering line, an

upwardly tapering nipple on the upper end or' the barrel, and downwardlyextending resilient fingers on said ring carrying wedge members forengagement between the nipple and the wall of a wellto'holdthe barrel

